Which of the following fischer projection formula is same as D_glyceraldehyde?

Which of the following Fischer's projection formula is identical to D- gluceraldehyde?

Write Fischer projection of

Which of the following Fisher projection formulae represents same stereoisomer

How is a Fischer projection formula drawn?

Which one of the following Fischer projection formula represents R - alanine ?

Which of the following representation of the Fischer projection formula is the meso isomer of 2, 3 dichlorobutane

Fischer projection indicates: